Display apparatus, driving method and display driving controller of cholesteric liquid crystal display panel
US8325125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus includes a cholesteric liquid crystal display panel, a control circuit and a driving circuit. The control circuit classifies pixels into different gradation level groups. The driving circuit applies a first driving waveform to the cholesteric liquid crystal display panel to bring pixels belonging to the first and the fourth group into a state corresponding to the highest gradation level, pixels belonging to the second group into a state corresponding to the lowest gradation level, and pixels belonging to the third group into states corresponding to gradation levels to be displayed, and applies a second driving waveform to the cholesteric liquid crystal display panel to bring pixels belonging to the fourth group into states corresponding to gradation levels to be displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.